78347323 has 16 divisors (see below), whose sum is σ = 83116800. Its totient is φ = 73751040.

The previous prime is 78347309. The next prime is 78347327. The reversal of 78347323 is 32374387.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78347323 is a prime.

It is a super-2 number, since 2×78347323² = 12276606042532658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78347327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201213 + ... + 201601.

It is an arithmetic number, because the mean of its divisors is an integer number (5194800).

Almost surely, 2^78347323 is an apocalyptic number.

78347323 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

78347323 is a deficient number, since it is larger than the sum of its proper divisors (4769477).

78347323 is a wasteful number, since it uses less digits than its factorization.

78347323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582.

The product of its digits is 84672, while the sum is 37.

The square root of 78347323 is about 8851.4023182770. The cubic root of 78347323 is about 427.8991140647.

The spelling of 78347323 in words is "seventy-eight million, three hundred forty-seven thousand, three hundred twenty-three".